Muppet Masquerade is a 3-LP set of Sesame Street songs from the first nine years of the show. The set also includes cardboard masks of Ernie, Bert, Big Bird, Grover, Oscar the Grouch, Count von Count and Cookie Monster. Each character gets a side's worth of songs (except for Ernie and Bert, who share Side One of Record One). The listener can put on the masks and, as the front cover suggests, "Be a Muppet!"